21027390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{5519}}^1$

素因数の和:5656

約数の個数: 32

約数和(自身を含む): 50872320

約数和(自身を除く): 29844930

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 127, 254, 381, 635, 762, 1270, 1905, 3810, 5519, 11038, 16557, 27595, 33114, 55190, 82785, 165570, 700913, 1401826, 2102739, 3504565, 4205478, 7009130, 10513695, 21027390]

約数ペア:

[(1, 21027390), (2, 10513695), (3, 7009130), (5, 4205478), (6, 3504565), (10, 2102739), (15, 1401826), (30, 700913), (127, 165570), (254, 82785), (381, 55190), (635, 33114), (762, 27595), (1270, 16557), (1905, 11038), (3810, 5519)]